The　microstructure　and　properties　of　cast　chromium　bronzes　with　varying　Zr　contents　obtained　by　different　treatment　methods　were　characterized　by　using　optical　microscopy,　scanning　electron　microscopy,　energy　dispersive　X-ray　spectrometry,　and　X-ray　diffraction.　In　the　specimens　with　the　same　composition,　the　precipitated　chromium　phase　particles　in　specimens　treated　by　quenching　and　aging　were　more　granular　than　those　in　specimens　treated　by　aging.　The　precipitated　Cr　phase　was　clearly　refined　and　segregated　when　zirconium　was　added　to　the　melt.　With　the　addition　of　zirconium,　the　tensile　strength　of　the　alloy　increased　by　about　3　%,　but　its　electrical　conductivity　decreased　by　about　9　%.